The Pacific Northwest– including Canada’s southwest provinces — is the only area in the U.S. and Canada that hasn’t been invaded by quagga and zebra mussels, a species that already clogs water pipes and hydroelectric facilities in Midwestern states.
The Pacific Northwest– including Canada’s southwest provinces — is the only area in the U.S. and Canada that hasn’t been invaded by quagga and zebra mussels, a species that already clogs water pipes and hydroelectric facilities in Midwestern states.